Most people researching lip flips are looking at the top lip — but what about the bottom? A lip flip on bottom lip treatment is far less common, and that’s exactly why there’s so much confusion around it. Some injectors offer it happily. Others won’t touch the lower lip at all. So who’s right?
This guide settles the debate with a clear, balanced look at what actually happens when Botox is used on the lower lip: who it genuinely helps, who it doesn’t, the risks that come with treating this smaller, more active muscle, and what realistic results look like. If you’ve been Googling whether a lip flip works on the bottom lip before booking a consultation, this is the article that finally answers it properly.
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Quick Answer: Can You Get a Lip Flip on Your Bottom Lip?
Yes, technically. A lip flip on the bottom lip uses a small dose of Botox to relax the muscle beneath the lower lip so it sits slightly more visible and less tucked-in. However, many injectors consider it unnecessary or higher-risk than a top lip flip, since the lower lip plays a bigger role in speech, drinking, and eating.
Key Takeaways
- A lip flip on the bottom lip is possible, but it’s far less common than treating the upper lip alone.
- It works best for people whose lower lip tucks inward or disappears when they smile — not for adding fullness.
- Many providers recommend against it or use very conservative dosing, since the lower lip muscle is more active during speech and drinking.
- Typical dosing is lower than the upper lip, often in the range of 2 to 6 units, though this varies by provider and anatomy.
- Results tend to fade slightly faster on the lower lip due to how often that muscle moves.
What Does a Lip Flip on the Bottom Lip Actually Do?
A standard lip flip targets the upper lip, relaxing the orbicularis oris muscle so it rolls outward and shows more of the natural lip when you smile. <cite index=”12-1″>The same botulinum toxin used for a standard lip flip can also relax muscle around the lower lip, causing it to sit slightly more everted, though this application makes your lip appear larger without adding actual volume.</cite>
Applied to the bottom lip, the same principle holds: the toxin relaxes the muscle pulling the lower lip inward, allowing more of it to show. It does not add volume, reshape the lip, or change its size — it only changes how much of the existing lip is visible.
Does a Lip Flip Work on the Bottom Lip? The Honest Answer
This is where opinions genuinely split, and it’s worth knowing why before your consultation.
Some providers say a bottom lip flip works well for a specific group: people whose lower lip visibly tucks under or disappears when they smile or speak. For this group, a small, conservative dose can create a softer, more balanced smile.
Other providers avoid it altogether. Their reasoning: the lower lip is more mobile and more involved in daily function than the upper lip, so relaxing it carries a higher chance of affecting speech, drinking, or eating. Several clinics simply don’t offer a lip flip on the bottom lip for this reason, steering patients toward filler instead if they want more lower lip presence.
The honest takeaway: a bottom lip flip is not a mainstream, low-risk add-on the way an upper lip flip is. It’s a more specialized request that depends heavily on your specific anatomy and your injector’s comfort and experience with it.
Who Is a Good Candidate for a Lower Lip Flip?
You may be a reasonable candidate if:
- Your bottom lip visibly tucks in or flattens when you smile or talk
- You’ve already had success with an upper lip flip and want subtle balance below
- You’re looking for a delicate change, not added fullness
- You’re working with an injector who has specific experience treating the lower lip
You’re likely not a good candidate if:
- You want your bottom lip to look bigger or fuller (filler is the right tool for that)
- You speak, sing, or play a wind instrument professionally
- You have a naturally strong, mobile lower lip muscle
- You’re pregnant or breastfeeding, since safety data in pregnancy is limited
If your goal is genuine fullness rather than visibility, it’s worth comparing this option against lip flip vs lip filler or lip filler vs lip flip before booking anything.
Top Lip Flip vs. Bottom Lip Flip: Key Differences
| Feature | Top Lip Flip | Bottom Lip Flip |
| Popularity | Very common | Uncommon |
| Main goal | Show more upper lip when smiling | Reduce lower lip tucking or disappearance |
| Typical units | 4–8 | 2–6 (more conservative) |
| Muscle activity involved | Moderate | Higher (speech, drinking, chewing) |
| Risk of function issues | Low | Slightly higher if over-dosed |
| Provider availability | Widely offered | Not all clinics offer it |
| Duration | 2–5 months | Often slightly shorter |
For more on how the upper lip version compares to filler and other options, see lip flip on thin lips and lip flip before and after thin lips.
How a Lip Flip on the Bottom Lip Works, Step by Step
- Assessment. Your provider evaluates how your lower lip moves when you smile, talk, and rest, and whether tucking is actually a muscle issue or a volume issue.
- Discussion of goals. A good injector will be upfront if a bottom lip flip isn’t the right fit for what you want.
- Conservative dosing. Small amounts of Botox are placed carefully to avoid affecting the muscles used for speech and drinking.
- Injection. The treatment itself takes only a few minutes, similar to how does a lip flip work for the upper lip.
- Monitoring and aftercare guidance. You’ll be watched briefly for any immediate reaction before heading home.
Timeline: What to Expect After a Bottom Lip Flip
| Time After Treatment | What to Expect |
| 0–24 hours | Mild tenderness or swelling near injection sites |
| 3–7 days | Muscle begins to relax; lip sits slightly less tucked |
| 1–2 weeks | Full effect visible |
| 6–10 weeks | Peak results; may fade slightly faster than the upper lip |
| 2–3 months | Effect gradually wears off |
Because the lower lip muscle is used constantly for speaking, eating, and drinking, results here can fade a bit faster than they do on the upper lip. For a broader look at how timing works across the whole mouth, see how long does a lip flip last and lip flip results day by day.
Pros and Cons of a Bottom Lip Flip
Pros
- Can soften a lower lip that tucks in when smiling
- Adds visible balance if you’ve already had an upper lip flip
- Non-surgical, quick, low commitment
- Reasonably affordable compared to filler
Cons
- Not offered by every provider
- Higher relative risk of affecting speech or drinking if over-dosed
- Doesn’t add volume — won’t make a thin bottom lip look fuller
- Results can wear off slightly faster than an upper lip flip
- Requires a provider genuinely experienced with lower lip anatomy
Risks and Warnings Specific to the Lower Lip
Because the lower lip does more day-to-day work than the upper lip, side effects here deserve extra attention. <cite index=”14-1″>It’s common to notice some difficulty eating and drinking in the days following treatment, particularly with straws, utensils, and pursing the lips, and most people become fully adjusted within about a week.</cite> If eating or drinking still feels difficult well beyond that window, check in with your provider rather than assuming it will resolve on its own.
Watch for the following and contact your provider if they occur:
- Ongoing difficulty forming certain sounds when speaking
- Persistent trouble drinking from a cup or straw beyond 10–14 days
- Visible asymmetry between the two sides of the lower lip
- Any signs of the effect spreading, including difficulty swallowing or breathing, which requires prompt medical attention
This article is educational and doesn’t replace a consultation with a licensed medical provider, who can evaluate your specific anatomy and medical history.
Common Mistakes People Make
- Assuming it works exactly like an upper lip flip. The lower lip has different function and different risks.
- Going to a provider without specific bottom lip experience. This is a more nuanced injection than the standard upper lip flip.
- Expecting added fullness. A lip flip repositions; it doesn’t plump.
- Over-treating both lips at once without a conservative starting dose. This raises the chance of speech or drinking issues.
- Judging results too early. Full effect can take up to two weeks to settle.
If things don’t go as planned, lip flip gone wrong and lip flip side effects cover what typically happens and how it resolves.
Cost of a Lip Flip on the Bottom Lip
Pricing is generally similar to a top lip flip, since dosing is small either way — commonly in a similar $80–$300 range, though this varies by provider, region, and whether it’s combined with an upper lip flip. See lip flip cost and how much does a lip flip cost for a fuller cost breakdown.
Aftercare Tips for a Lower Lip Flip
- Avoid straws, smoking, and vigorous lip movement for the first few days
- Skip lip products for 3–4 days to avoid pressure on the treated area
- Eat carefully and avoid very chewy or messy foods for the first day or two
- Apply a cold compress if you notice swelling
- Give it the full one to two weeks before judging your results
Related reading: lip flip aftercare, can you eat after a lip flip, and can you drink after a lip flip.
Frequently Asked Questions
Is a lip flip on the bottom lip common? No. It’s far less common than an upper lip flip, and not every provider offers it. Many injectors reserve it for specific cases where the lower lip visibly tucks inward.
Does a bottom lip flip make lips look fuller? Not in terms of added volume. It changes how much of your existing lower lip is visible, similar to how a top lip flip works, but it doesn’t plump the lip.
Is a lip flip on the bottom lip safe? It’s generally considered safe when performed conservatively by an experienced injector, though the lower lip’s role in speech and drinking means dosing needs to be more precise than for the upper lip.
How many units of Botox are used for a bottom lip flip? Dosing varies, but providers who offer it often use a smaller, more conservative amount than a typical upper lip treatment to minimize the risk of affecting speech or drinking. Compare this with how many units of Botox for a lip flip.
Can I get a lip flip on both the top and bottom lip at the same time? Yes, some providers combine a conservative upper and lower lip treatment for a balanced result, though this requires careful, experienced dosing on both sides.
Will a bottom lip flip affect my speech? Temporary changes in speech, particularly with sounds like “P” and “B,” are possible in the days after treatment and usually resolve within a week or two as you adjust.
How long does a lip flip on the bottom lip last? Results often last slightly less time than an upper lip flip, commonly in the range of six to ten weeks, since the lower lip muscle is used more frequently.
Why do some clinics refuse to do a bottom lip flip? Because the lower lip plays a larger functional role in eating, drinking, and speaking, some providers feel the risk-to-benefit ratio doesn’t favor treating it, and prefer filler for lower lip goals instead.
What’s the alternative if I want a fuller bottom lip? Lip filler is generally the better option for adding volume to the bottom lip, since a lip flip only repositions the lip rather than plumping it.
Does a bottom lip flip hurt more than a top lip flip? Discomfort levels are typically similar, since both use the same thin needle and small injection volume. See does a lip flip hurt for more detail.
Can a bottom lip flip fix an uneven smile? It may help in cases where the unevenness comes from muscle tension rather than lip shape, but a full assessment is needed to know if that’s the actual cause.
How soon will I see results from a bottom lip flip? Most people notice initial changes within three to seven days, with full results settling in around one to two weeks.
Summary Lip Flip on Bottom Lip
A lip flip on the bottom lip is possible, but it’s a more specialized, lower-demand treatment than the standard upper lip flip — and not every provider recommends it. It can genuinely help people whose lower lip tucks inward when smiling, but it won’t add volume, and the lower lip’s role in speech and drinking means it carries a bit more risk if dosed too aggressively. If your main goal is a fuller-looking bottom lip rather than better visibility, filler is usually the more effective route. Whatever you choose, look for a provider with specific experience treating the lower lip, start conservative, and give results the full two weeks to settle before judging them. Browse real results at lip flip before and after and lip flip results to see what’s realistic.
